<template>
  <static-content-wrapper
    :designer="designer"
    :settings="settings"
    :field="field"
    :design-state="designState"
    :hidden="field.options.hidden"
    :parent-widget="parentWidget"
    :parent-list="parentList"
    :index-of-parent-list="indexOfParentList"
    :sub-form-row-index="subFormRowIndex"
    :sub-form-col-index="subFormColIndex"
    :sub-form-row-id="subFormRowId"
  >
    <div
      class="field-editor checkbox-field-editor"
      :style="{
        width: scaleWidth + 'px',
        height: scaleHeight + 'px'
      }"
    >
      <el-checkbox-group
        ref="fieldEditor"
        v-model="field.options.value"
        :disabled="field.options.disabled"
        @change="handleChangeEvent"
      >
        <template v-if="!!field.options.buttonStyle">
          <el-checkbox-button
            v-for="(item, index) in field.options.optionItems"
            :key="index"
            :label="item.label"
            :value="item.value"
            :disabled="item.disabled"
            :border="field.options.border"
            :style="{ display: field.options.hidden }"
            >{{ item.label }}</el-checkbox-button
          >
        </template>
        <template v-else>
          <el-checkbox
            v-for="(item, index) in field.options.optionItems"
            :key="index"
            :label="item.label"
            :value="item.value"
            :disabled="item.disabled"
            :border="field.options.border"
            :style="{ display: field.options.hidden }"
            >{{ item.label }}</el-checkbox
          >
        </template>
      </el-checkbox-group>
    </div>
  </static-content-wrapper>
</template>

<script>
import emitter from '@/mixins/emitter'
import fieldMixin from '@/mixins/fieldMixin'

export default {
  name: 'CheckboxWidget',
  componentName: 'FieldWidget',
  // 必须固定为FieldWidget，用于接收父级组件的broadcast事件
  mixins: [emitter, fieldMixin],
  props: {
    field: Object,
    parentWidget: Object,
    parentList: Array,
    indexOfParentList: Number,
    designer: Object,
    settings: Object,
    scale: {
      type: Number,
      default: 1
    },

    designState: {
      type: Boolean,
      default: false
    },

    subFormRowIndex: {
      /* 子表单组件行索引，从0开始计数 */ type: Number,
      default: -1
    },
    subFormColIndex: {
      /* 子表单组件列索引，从0开始计数 */ type: Number,
      default: -1
    },
    subFormRowId: {
      /* 子表单组件行Id，唯一id且不可变 */ type: String,
      default: ''
    }
  },
  data() {
    return {
      oldFieldValue: null, //field组件change之前的值
      fieldModel: null,
      rules: []
    }
  },
  computed: {
    scaleWidth() {
      return this.field.options.width * this.scale
    },
    scaleHeight() {
      return this.field.options.height * this.scale
    }
  },
  beforeCreate() {
    /* 这里不能访问方法和属性！！ */
  },

  created() {
    /* 注意：子组件mounted在父组件created之后、父组件mounted之前触发，故子组件mounted需要用到的prop
         需要在父组件created中初始化！！ */
    this.initOptionItems()
    this.registerToRefList()
    this.initEventHandler()
    this.buildFieldRules()

    this.handleOnCreated()
  },

  mounted() {
    this.handleOnMounted()
  },

  beforeUnmount() {
    this.unregisterFromRefList()
  },

  methods: {}
}
</script>

<style lang="scss" scoped>
@import '../../assets/styles/global.scss'; /* form-item-wrapper已引入，还需要重复引入吗？ */
</style>
